[Steve Van Doorn]

said, “neutron star” (lowest density star)"

I don't disagree it's the lowest density star. Though the mass is under estimated. Because all stars are based on the mass of gas which they're a solid.

The standard model for calculating a stars mass is wrong they call gravitational lensing. The way they calculate a stars mass is they measures the path of light that is bent by the gravitational pull of a nearby object. They assume the mass of the star bending the path is very low based on their mythology that stars are a gas.

Once you figure out stars are not a gas. nearly everything you thought was true in astronomy and nuclear physics is wrong.

[TexasGator]

“The way they calculate a stars mass is they measures the path of light that is bent by the gravitational pull of a nearby object.”

Measured!

“They assume the mass of the star bending the path is very low based on their mythology that stars are a gas.”

Assumed!

Which is it?

[Lazamataz]

Once you figure out stars are not a gas. nearly everything you thought was true in astronomy and nuclear physics is wrong.

Actually, if I am not mistaken, non-neutron, non-black-hole stars are generally made up of the fourth form of matter: Plasma.